Science, God, and the ultimate evolutionary question

Until science proves the origin of the very first cells, many will wheel out God as the default expl

Until science proves the origin of the very first cells, many will wheel out God as the default explanation.

No-one who has visited Richard Dawkins' website recently would have failed to notice the prominence given to an award being offered of up to 2 million dollars. Unfortunately for most of us, nobody will be granted the funding unless they put together a proposal for scientific research into the origin of life on our planet.

It's hardly a surprise that the site should draw attention to the award. After all, however much we think that we know about evolution, science is far from providing a confident explanation of the origin of the very first cells from which all life evolved. Until this gap in scientific knowledge is filled, many believers will continue to resort to God as the default explanation. For some, it must have been God who planted the first living cells on the planet, before leaving the stage and letting evolution take over. For others, the fact that no-one can prove how life originated sounds the death knell for evolution itself but is music to the ears of those who believe in Adam and Eve.

But are they right? Is science incapable of explaining the emergence of the first cells from which all life originated without the need for God?

In 1953 biologist Stanley Miller set up an experiment in the lab, intended to recreate what scientists call the earth's "primordial soup" when life first appeared 3.5 billion years ago. He created a sealed environment comprising boiling water and electric probes to simulate the effect of lightening on some of the young planet's hot waters. Thrown into the mix were methane, ammonia and hydrogen, the gases believed to be present on the early earth. The aim was to see whether anything related to life would form. Within a week, five amino acids had appeared in the water. This was a stunning result. After all, amino acids are the molecules which join up to form proteins inside living cells.

But to create proteins - and therefore life - amino acids must be strung together in a very specific order. And cells require DNA to do this. But how could something as complex as DNA have come into existence? Miller's experiment didn't answer that.

A possible explanation was found after a meteorite, slightly older than earth, crashed down in Australia in 1969. Amazingly one of the DNA bases was found inside the rock. Since the early earth was bombarded by meteorites for millions of years, this raises the tantalising possibility that DNA and RNA could have arrived here on meteorites around the time that life first appeared on the planet. This provides a partial explanation of how the amino acids could have developed into life.

But there are problems with the idea that life began in a Miller-like primordial soup. Analysis of ancient rocks has made it plain that at the time that life appeared, the earth was no longer rich in methane, ammonia and hydrogen. Besides, any soup would have been thermodynamically flat. This means that there was probably nothing to force the various molecules to react with each other, whether or not extraterrestrial DNA and RNA molecules were also present. And so far, scientists haven't been able to explain how the necessary molecules would have come together without a cell membrane.

But there is a different theory which addresses all these concerns.

It is well-known that the continents have been drifting apart throughout the lifetime of the planet. This is due to the movement of tectonic plates below the oceans. As these plates strike each other, new rocks are exposed to the sea water. This creates alkaline hydrothermal vents. The water physically reacts with the rocks and this releases heat along with gases reminiscent of Miller's experiments. As a result, warm alkaline hydrothermal fluids percolate into the cold oceans and, near the vents, structures are created which look rather like stalagmites and which are riddled with tiny compartments. These compartments could have been ideal places for chemical compounds from the gases to concentrate and combine to form early life in a fairly enclosed environment.

Although the existence of these vents had been predicted decades ago, it wasn't until 2000 that one was discovered in a part of the Atlantic Ocean which has been named Lost City. Scientists have analysed the cell-sized pores in the structures which were found there and concluded that they were almost ideal reaction vessels for producing the first life. What's more, the chemical imbalance between the sea water and the gases could have created an electrical charge which in turn possibly caused the chemical reactions needed to kick-start the creation of life.

But as I mentioned earlier, it's not sufficient to work out how the first amino acids may have appeared. It's also necessary to explain how DNA could have come onto the scene. Unfortunately DNA can't evolve without proteins. And proteins can't evolve without DNA.

Many scientists believe that the answer lies in the RNA World Theory. In 2007 it was discovered that nucleotides (and so RNA) could grow in simulated vents. At around the same time a scientific paper was published which concluded that RNA may have developed by living inside mineral cells in the vents. Biochemist Nick Lane believes once that had happened, RNA may have changed to DNA virtually spontaneously.

And so the hydrothermal vents theory provides a plausible account of how the first life could have formed on earth along with the DNA which was necessary to replicate it. But the theory certainly has difficulties. In fact, a similar theory based on a different type of vents, black smokers, is now generally given short shrift by the scientific community. Perhaps the hydrothermal vents theory will likewise come unstuck.

This is a difficult area of science. No doubt whoever receives that award, will have to work hard to earn every cent.

Andrew Zak Williams has written for the Independent and the Humanist and is a contributor to Skeptic Magazine. His email address is: andrewbelief@gmail.com

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The struggles of Huma Abedin

On the behind-the-scenes story of Hillary Clinton’s closest aide.

In a dreary campaign, it was a moment that shone: Hillary Clinton, on the road to the caucus in Iowa, stopping at a Mexican fast-food restaurant to eat and somehow passing unrecognised. Americans of all political persuasions gleefully speculated over what her order – a chicken burrito bowl with guacamole – revealed about her frame of mind, while supporters gloated that the grainy security-camera footage seemed to show Clinton with her wallet out, paying for her own lunch. Here was not the former first lady, senator and secretary of state, known to people all over the world. This was someone’s unassuming grandmother, getting some food with her colleagues.

It might be unheard of for Clinton to go unrecognised but, for the woman next to her at the till, blending into the background is part of the job. Huma Abedin, often referred to as Clinton’s “shadow” by the US media, is now the vice-chair of her presidential campaign. She was Clinton’s deputy chief of staff at the state department and has been a personal aide since the late 1990s.

Abedin first met Clinton in 1996 when she was 19 and an intern at the White House, assigned to the first lady’s office. She was born in Michigan in 1976 to an Indian father and a Pakistani mother. When Abedin was two, they moved from the US to Saudi Arabia. She returned when she was 18 to study at George Washington University in Washington, DC. Her father was an Islamic scholar who specialised in interfaith reconciliation – he died when she was 17 – and her mother is a professor of sociology.

While the role of “political body woman” may once have been a kind of modern maid, there to provide a close physical presence and to juggle the luggage and logistics, this is no longer the case. During almost 20 years at Clinton’s side, Abedin has advised her boss on everything from how to set up a fax machine – “Just pick up the phone and hang it up. And leave it hung up” – to policy on the Middle East. When thousands of Clinton’s emails were made public (because she had used a private, rather than a government, server for official communication), we glimpsed just how close they are. In an email from 2009, Clinton tells her aide: “Just knock on the door to the bedroom if it’s closed.”

Abedin shares something else with Clinton, outside of their professional ties. They are both political wives who have weathered their husbands’ scandals. In what felt like a Lewinsky affair for the digital age, in 2011, Abedin’s congressman husband, Anthony Weiner, resigned from office after it emerged that he had shared pictures of his genitals with strangers on social media. A second similar scandal then destroyed his attempt to be elected mayor of New York in 2013. In an ironic twist, it was Bill Clinton who officiated at Abedin’s and Weiner’s wedding in 2010. At the time, Hillary is reported to have said: “I have one daughter. But if I had a second daughter, it would [be] Huma.” Like her boss, Abedin stood by her husband and now Weiner is a house husband, caring for their four-year-old son, Jordan, while his wife is on the road.

Ellie Foreman-Peck

A documentary filmed during Weiner’s abortive mayoral campaign has just been released in the US. Weiner shows Abedin at her husband’s side, curtailing his more chaotic tendencies, always flawless with her red lipstick in place. Speaking to the New York Observer in 2007, three years before their marriage, Weiner said of his future wife: “This notion that Senator Clinton is a cool customer – I mean, I don’t dispute it, but the coolest customer in that whole operation is Huma . . . In fact, I think there’s some dispute as to whether Huma’s actually human.” In the film, watching her preternatural calm under extraordinary pressure, you can see what he means.

In recent months, Abedin’s role has changed. She is still to be found at Clinton’s side – as the burrito photo showed – but she is gradually taking a more visible role in the organisation overall, as they pivot away from the primaries to focus on the national race. She meets with potential donors and endorsers on Clinton’s behalf and sets strategy. When a running mate is chosen, you can be sure that Abedin will have had her say on who it is. There’s a grim symmetry to the way politics looks in the US now: on one side, the Republican candidate Donald Trump is calling for a ban on Muslims entering the country; on the other, the presumptive Democratic nominee Hillary Clinton relies ever more on her long-time Muslim-American staffer.

Years before Trump, notable Republicans were trying to make unpleasant capital out of Abedin’s background. In 2012, Tea Party supporters alleged that she was linked to the Muslim Brotherhood and its attempt to gain access “to top Obama officials”. In her rare interviews, Abedin has spoken of how hurtful these baseless statements were to her family – her mother still lives in Saudi Arabia. Later, the senator and former Republican presidential candidate John McCain spoke up for her, saying that Abedin represented “what is best about America”.

Whether senior figures in his party would do the same now remains to be seen.

Caroline Crampton is web editor of the New Statesman.

This article first appeared in the 26 May 2016 issue of the New Statesman, The Brexit odd squad